@article{Maksyutin2014some,
author={Maksyutin, A.. and Klekovkin, G..},
title={Some Methodical Features of Work with Multilevel System of Educational tasks, focused on the Unified State Examination Rormat on Mathematics},
journal={Profession-Oriented School},
publisher={INFRA-M Academic Publishing LLC.},
year={2014},
pages={19-23},
volume={2},
issue={5},
}